title: [Assessment of prenatal, perinatal, and postnatal factors for intraventricular hemorrage in premature newborns less than 33 weeks of gestational age].
abstract: OBJECTIVE
  Evaluation of risk factors for intraventricular hemorrhage in preterm less than 33 weeks gestational age (RNP).
  
  
  METHODS
  CASE-control study. We included RNP from a tertiary care center classified by the results of transfontanellar sonography.
  
  
  METHODS
  presence of intraventricular hemorrhage.
  
  
  METHODS
  absence of intraventricular hemorrhage. We investigated prenatal history perinatal and postnatal. Logistic regression was used to adjust the variables associated with intraventricular hemorrhage; we calculated odds ratios (OR) with confidence intervals of 95% (95% CI).
  
  
  RESULTS
  We analyzed the medical records of RNP 64; of these 32 were cases. The risk factors associated with intraventricular hemorrhage were: sepsis (OR: 18.45; 95% CI: 4.01-32.82; p = 0.01), respiratory distress syndrome (OR: 2.24; 95% CI: 1.07-4.95; p = 0.04), use with mechanical ventilation (OR: 3.60; 95% CI: 1.46-8.91; p = 0.01), and exogenous surfactant (OR: 2.32; 95% CI: 1.05-6.14; p = 0.03).
  
  
  CONCLUSIONS
  The postnatal factors were associated with higher risk for intraventricular hemorrhage in RNR The transfontanellar sonography should be taken at different times to know with precision the risk factors for this pathology and try to avoid them.
authors.affiliation: Unidad Médica de Alta Especialidad, Hospital de Gineco-Obstetricia, Centro Médico Nacional de Occidente, Institute Mexicano del Seguro Social, Guadalajara, Jal.
authors.forename: Angélica María
authors.initials: AM
authors.lastname: Caro-López
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Barrera-de León
authors.forename: Heriberto
authors.initials: H
authors.lastname: Domínguez-Sánchez
authors.forename: Ruth
authors.initials: R
authors.lastname: Alejandrina-Castillo Sánchez
authors.forename: Martha Alicia
authors.initials: MA
authors.lastname: Higareda-Almaraz
mesh_terms: D016022:Case-Control Studies; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D020300:Intracranial Hemorrhages / Q000453:epidemiology / Q000209:etiology*; D008297:Male; D012307:Risk Factors